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Definition of Actinism
1. Noun. The property of radiation that enables it to produce photochemical effects.
Definition of Actinism
1. n. The property of radiant energy (found chiefly in solar or electric light) by which chemical changes are produced, as in photography.
Definition of Actinism
1. the property of radiant energy that effects chemical changes [n -S]
Medical Definition of Actinism
1. The property of radiant energy (found chiefly in solar or electric light) by which chemical changes are produced, as in photography. Origin: Gr, ray. Source: Websters Dictionary (01 Mar 1998)